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一氧化铬

一氧化铬
IUPAC名
chromium(II) oxide
识别
CAS号 12018-00-7  checkY
PubChem 3037052
性质
化学式 CrO
摩尔质量 67.996 g·mol⁻¹
外观 黑色
熔点 300 °C (分解)
结构
晶体结构 立方晶系, cF8
空间群 Fm3m, No. 225
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

一氧化铬的化学式为CrO,[1] 又称氧化亚铬氧化铬(II)。它是一种黑色粉末,有着氯化钠晶型[2] 次磷酸及其盐能将三氧化二铬还原为一氧化铬:

H3PO2 + 2 Cr2O3 → 4 CrO + H3PO4

一氧化铬在空气中迅速被氧化

一氧化铬也可以通过铬汞齐和硝酸反应制备,得到易潮解的黑色粉末,纯的一氧化铬是棕红色的六方型晶体。

化学性质

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一氧化铬可以在空气中燃烧,产生三氧化二铬。一氧化铬在所有温度下都是介稳的,不溶于和某些稀酸,但却溶于稀盐酸生成一个同时含有二价铬和三价铬的溶液。[3]一氧化铬是强还原剂。

铬的其他氧化物

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参考资料

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  1. ^ Satish. Anand, Raj. Kumar, Dictionary of Inorganic Chemistry, Anmol Publications, 1989, ISBN 9788170412366, ISBN 8170412366 
  2. ^ Egon Wiberg, Arnold Frederick Holleman (2001) Inorganic Chemistry, Elsevier ISBN 0123526515
  3. ^ 《无机化学》丛书.张青莲 主编.第八卷.P418-419. 1.6.4 二价铬氧化物和氢氧化物
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一氧化铬
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